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Interface IC's Interface - I/O Expanders

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Series	Mounting Style	Package/Case	Interface Type	Number of I/Os	Interrupt Output	Supply Voltage - Min	Supply Voltage - Max	Maximum Clock Frequency	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Packaging	ESD Protection
Interface - I/O Expanders 8B I/O Expander SPI interface MCP23S09-E/MG Microchip Technology 1: £1.27 6,970In Stock 5,040Expected 14/12/2026	Mfr. Part No. MCP23S09-E/MG Mouser Part No 579-MCP23S09-E/MG	Microchip Technology	Interface - I/O Expanders 8B I/O Expander SPI interface	Datasheet	6,970In Stock 5,040Expected 14/12/2026	£1.27 £1.07 £0.969	Min.: 1 Mult.: 1		SMD/SMT	QFN-16	Serial, SPI	8 I/O	With Interrupt	1.8 V	5.5 V	10 MHz	- 40 C	+ 125 C		Tube	4 kV
Interface - I/O Expanders NCA9555PW/SOT355/TSSOP24 NCA9555PWJ Nexperia 1: £1.21 2,705In Stock	Mfr. Part No. NCA9555PWJ Mouser Part No 771-NCA9555PWJ	Nexperia	Interface - I/O Expanders NCA9555PW/SOT355/TSSOP24 Learn More about Nexperia nca9555pw expanders	Datasheet	2,705In Stock	Cut Tape £1.21 £0.908 £0.826 £0.732 Reel £0.602 View £0.689 £0.662 £0.643 £0.588 MouseReel Available	Min.: 1 Mult.: 1 : 2,500		SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
Interface - I/O Expanders NCA9535PW/SOT355/TSSOP24 NCA9535PWJ Nexperia 1: £1.07 2,614In Stock	Mfr. Part No. NCA9535PWJ Mouser Part No 771-NCA9535PWJ	Nexperia	Interface - I/O Expanders NCA9535PW/SOT355/TSSOP24 Learn More about Nexperia nca9535 nca9539 nca9555 gipo expanders	Datasheet	2,614In Stock	Cut Tape £1.07 £0.773 £0.695 £0.614 Reel £0.505 View £0.575 £0.552 £0.528 £0.491 MouseReel Available	Min.: 1 Mult.: 1 : 2,500		SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
Interface - I/O Expanders NCA9555BY-Q100/SOT8041/HWQFN24 NCA9555BY-Q100HP Nexperia 1: £1.40 3,103In Stock	Mfr. Part No. NCA9555BY-Q100HP Mouser Part No 771-NCA9555BY-Q100HP	Nexperia	Interface - I/O Expanders NCA9555BY-Q100/SOT8041/HWQFN24 Learn More about Nexperia nca9535 nca9539 nca9555 gipo expanders	Datasheet	3,103In Stock	Cut Tape £1.40 £1.03 £0.934 £0.834 Reel £0.691 View £0.78 £0.75 £0.747 £0.663 MouseReel Available	Min.: 1 Mult.: 1 : 3,000		SMD/SMT	HWQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	100 kHz, 400 kHz	- 40 C	+ 125 C	AEC-Q100	Reel, Cut Tape, MouseReel
Interface - I/O Expanders 8-bit I/O Expander I2C interface MCP23009-E/SS Microchip Technology 1: £1.14 837In Stock 2,546Expected 16/11/2026	Mfr. Part No. MCP23009-E/SS Mouser Part No 579-MCP23009-E/SS	Microchip Technology	Interface - I/O Expanders 8-bit I/O Expander I2C interface	Datasheet	837In Stock 2,546Expected 16/11/2026	£1.14 £0.952 £0.863	Min.: 1 Mult.: 1		SMD/SMT	SSOP-20	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	3.4 MHz	- 40 C	+ 125 C		Tube	4 kV
Interface - I/O Expanders In/Out I2C int MCP23008-E/P Microchip Technology 1: £1.15 2,955In Stock	Mfr. Part No. MCP23008-E/P Mouser Part No 579-MCP23008-E/P	Microchip Technology	Interface - I/O Expanders In/Out I2C int	Datasheet	2,955In Stock	£1.15 £0.969	Min.: 1 Mult.: 1		Through Hole	PDIP-18	I2C, Serial	8 I/O	With Interrupt	1.8 V	5.5 V	1.7 MHz	- 40 C	+ 125 C		Tube	Without ESD Protection
Interface - I/O Expanders SDIO Port Expander TXS02612RTWR Texas Instruments 1: £1.40 14,919In Stock 27,000On Order	Mfr. Part No. TXS02612RTWR Mouser Part No 595-TXS02612RTWR	Texas Instruments	Interface - I/O Expanders SDIO Port Expander	Datasheet	14,919In Stock 27,000On Order On Order Ship Dates Mfr. No: TXS02612RTWR Stock: 14,919 Can Dispatch Immediately On Order: 3,000 Expected 21/12/2026 3,000 Expected 21/01/2027 21,000 Expected 13/05/2027 Factory Lead Time: 20 Weeks	Cut Tape £1.40 £1.03 £0.943 £0.826 Reel £0.693 View £0.78 £0.748 £0.744 £0.678 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TXS02612	SMD/SMT	WQFN-24	Parallel	4 I/O	Without Interrupt	1.1 V	3.6 V	60 MHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders Interface IO Expander W-QFN5050-32 T&R 2.5K PI4IOE5V6524ZHEX Diodes Incorporated 1: £1.62 3,218In Stock 5,000Expected 14/04/2028	Mfr. Part No. PI4IOE5V6524ZHEX Mouser Part No 621-PI4IOE5V6524ZHEX	Diodes Incorporated	Interface - I/O Expanders Interface IO Expander W-QFN5050-32 T&R 2.5K Learn More about Diodes Incorporated diodes pi4ioe5v6416 io expander		3,218In Stock 5,000Expected 14/04/2028	Cut Tape £1.62 £1.20 £1.08 £0.978 £0.917 Reel £0.917 MouseReel Available	Min.: 1 Mult.: 1 Max.: 320 : 2,500		SMD/SMT	WQFN5050-32	I2C, Serial	24 I/O	With Interrupt	1.65 V	5.5 V	1 MHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders PERI PRG-I/O 5V 8MHZ 44PLCC IND IS82C55AZ Renesas / Intersil 1: £31.18 641In Stock	Mfr. Part No. IS82C55AZ Mouser Part No 968-IS82C55AZ	Renesas / Intersil	Interface - I/O Expanders PERI PRG-I/O 5V 8MHZ 44PLCC IND	Datasheet	641In Stock	£31.18 £25.74 £24.19 £22.79 View £21.37 Quote	Min.: 1 Mult.: 1	82C55A	SMD/SMT	PLCC-44	Parallel	24 I/O	With Interrupt	4.5 V	5.5 V	8 MHz	- 40 C	+ 85 C		Tube	1 kV
Interface - I/O Expanders NCA9539BY/SOT8041/HWQFN24 NCA9539BYHP Nexperia 1: £1.34 350In Stock	Mfr. Part No. NCA9539BYHP Mouser Part No 771-NCA9539BYHP	Nexperia	Interface - I/O Expanders NCA9539BY/SOT8041/HWQFN24 Learn More about Nexperia nca9535 nca9539 nca9555 gipo expanders	Datasheet	350In Stock	Cut Tape £1.34 £0.986 £0.89 £0.796 Reel £0.648 View £0.746 £0.718 £0.714 £0.633	Min.: 1 Mult.: 1 : 3,000		SMD/SMT	HWQFN-24										Reel, Cut Tape
Interface - I/O Expanders NCA9555BY/SOT8041/HWQFN24 NCA9555BYHP Nexperia 1: £1.20 2,828In Stock	Mfr. Part No. NCA9555BYHP Mouser Part No 771-NCA9555BYHP	Nexperia	Interface - I/O Expanders NCA9555BY/SOT8041/HWQFN24 Learn More about Nexperia nca9535 nca9539 nca9555 gipo expanders	Datasheet	2,828In Stock	Cut Tape £1.20 £0.882 £0.796 £0.705 Reel £0.59 View £0.663 £0.637 £0.632 £0.576 MouseReel Available	Min.: 1 Mult.: 1 : 3,000		SMD/SMT	HWQFN-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	100 kHz, 400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
Interface - I/O Expanders 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port MAX7300AAX+ Analog Devices / Maxim Integrated 1: £16.17 524In Stock	Mfr. Part No. MAX7300AAX+ Mouser Part No 700-MAX7300AAX	Analog Devices / Maxim Integrated	Interface - I/O Expanders 2-Wire-Interfaced, 2.5V to 5.5V, 20-Port	Datasheet	524In Stock	£16.17 £12.84 £12.29 £11.34 View £10.82 £10.62	Min.: 1 Mult.: 1	MAX7300	SMD/SMT	SSOP-36	I2C, Serial	20 I/O	With Interrupt	2.5 V	5.5 V	400 kHz	- 40 C	+ 125 C		Tube	Without ESD Protection
Interface - I/O Expanders Interface IO Expander TSSOP-24 T&R 3K PI4IOE5V6416ALEX Diodes Incorporated 1: £1.48 1,750In Stock	Mfr. Part No. PI4IOE5V6416ALEX Mouser Part No 621-PI4IOE5V6416ALEX	Diodes Incorporated	Interface - I/O Expanders Interface IO Expander TSSOP-24 T&R 3K Learn More about Diodes Incorporated diodes pi4ioe5v6416 io expander		1,750In Stock	Cut Tape £1.48 £1.08 £0.952 £0.871 View Reel £0.73 £0.849 £0.834 £0.826 £0.73 MouseReel Available	Min.: 1 Mult.: 1 : 3,000		SMD/SMT	TSSOP-24	I2C, Serial	16 I/O	With Interrupt	1.65 V	5.5 V	1 MHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders Remote 8B I2C and Lo w-Pwr I/O Expander TCA9534PWR Texas Instruments 1: £1.30 19,508In Stock	Mfr. Part No. TCA9534PWR Mouser Part No 595-TCA9534PWR	Texas Instruments	Interface - I/O Expanders Remote 8B I2C and Lo w-Pwr I/O Expander	Datasheet	19,508In Stock	Cut Tape £1.30 £0.952 £0.871 £0.773 Reel £0.65 View £0.724 £0.697 £0.693 £0.636 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	TCA9534	SMD/SMT	TSSOP-16	I2C, Serial, SMBus	8 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders 16-bit translating I C-bus/SMBus I/O exp TCAL6416RADTOR Texas Instruments 1: £2.03 3,599In Stock New Product	Mfr. Part No. TCAL6416RADTOR Mouser Part No 595-TCAL6416RADTOR New Product	Texas Instruments	Interface - I/O Expanders 16-bit translating I C-bus/SMBus I/O exp Learn More about Texas Instruments ti tcal6416r i2c bus smbus io expander	Datasheet	3,599In Stock	Cut Tape £2.03 £1.52 £1.39 £1.25 Reel £1.05 View £1.18 £1.15 £1.12 £1.04 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TCAL6416R	SMD/SMT	QFN-24	I2C	16 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	4 kV
Interface - I/O Expanders 40-bit I2C-bus Advanced I/O Expander with Interrupt, Reset and Output Enable in TSSOP56 package PCA9698DGG,518 NXP Semiconductors 1: £7.19 5,224In Stock 12,000Expected 29/12/2026	Mfr. Part No. PCA9698DGG,518 Mouser Part No 771-PCA9698DGG-T	NXP Semiconductors	Interface - I/O Expanders 40-bit I2C-bus Advanced I/O Expander with Interrupt, Reset and Output Enable in TSSOP56 package	Datasheet	5,224In Stock 12,000Expected 29/12/2026	Cut Tape £7.19 £5.60 £5.19 £4.76 £4.66 Reel £3.96 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	PCA9698	SMD/SMT	TSSOP-56	I2C, Serial	40 I/O	With Interrupt	2.3 V	5.5 V	1 MHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders 16B I/O Expander SPI interface MCP23S18-E/MJ Microchip Technology 1: £1.62 3,023In Stock 4,095On Order	Mfr. Part No. MCP23S18-E/MJ Mouser Part No 579-MCP23S18-E/MJ	Microchip Technology	Interface - I/O Expanders 16B I/O Expander SPI interface	Datasheet	3,023In Stock 4,095On Order	£1.62 £1.35 £1.22	Min.: 1 Mult.: 1		SMD/SMT	QFN-24	Serial, SPI	16 I/O	With Interrupt	1.8 V	5.5 V	10 MHz	- 40 C	+ 125 C		Tube	Without ESD Protection
Interface - I/O Expanders 16B I/O Expander I2C interface MCP23018-E/MJ Microchip Technology 1: £1.53 2,839In Stock	Mfr. Part No. MCP23018-E/MJ Mouser Part No 579-MCP23018-E/MJ	Microchip Technology	Interface - I/O Expanders 16B I/O Expander I2C interface	Datasheet	2,839In Stock	£1.53 £1.27 £1.15	Min.: 1 Mult.: 1		SMD/SMT	QFN-24	I2C, Serial	16 I/O	With Interrupt	1.8 V	5.5 V	3.4 MHz	- 40 C	+ 125 C		Tube	Without ESD Protection
Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER TCAL9538RSVR Texas Instruments 1: £1.44 4,841In Stock 9,000Expected 29/03/2027	Mfr. Part No. TCAL9538RSVR Mouser Part No 595-TCAL9538RSVR	Texas Instruments	Interface - I/O Expanders ULTRA LOW VOLTAGE AG ILE I/O EXPANDER Learn More about Texas Instruments ti tcal9538 expanders	Datasheet	4,841In Stock 9,000Expected 29/03/2027	Cut Tape £1.44 £1.07 £0.969 £0.863 Reel £0.725 View £0.811 £0.78 £0.711 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	TCAL9538	SMD/SMT	UQFN-16	I2C, Serial, SMBus	9 I/O	With Interrupt	1.08 V	3.6 V	1 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel
Interface - I/O Expanders Remote 16B I2C & SMB us I/O Expander TCA9555PWR Texas Instruments 1: £1.48 17,842In Stock	Mfr. Part No. TCA9555PWR Mouser Part No 595-TCA9555PWR	Texas Instruments	Interface - I/O Expanders Remote 16B I2C & SMB us I/O Expander Learn More about Texas Instruments ti tca9555 io expander	Datasheet	17,842In Stock	Cut Tape £1.48 £1.07 £0.978 £0.871 Reel £0.738 View £0.818 £0.788 £0.78 £0.721 MouseReel Available	Min.: 1 Mult.: 1 : 2,000	TCA9555	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	1.65 V	5.5 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel	2 kV
Interface - I/O Expanders 16B I/O Expander SPI interface MCP23S18T-E/MJ Microchip Technology 1: £1.62 2,405In Stock 9,900Expected 01/01/2027	Mfr. Part No. MCP23S18T-E/MJ Mouser Part No 579-MCP23S18T-E/MJ	Microchip Technology	Interface - I/O Expanders 16B I/O Expander SPI interface	Datasheet	2,405In Stock 9,900Expected 01/01/2027	Cut Tape £1.62 £1.35 Reel £1.22 MouseReel Available	Min.: 1 Mult.: 1 : 3,300	MCP23S18	SMD/SMT	QFN-24	Serial, SPI	16 I/O	With Interrupt	1.8 V	5.5 V	10 MHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel	Without ESD Protection
Interface - I/O Expanders 16-Bit I2C & SMBus L o-Pwr I/O Expander A 595-PCA9535DWR PCA9535DW Texas Instruments 1: £4.00 514In Stock	Mfr. Part No. PCA9535DW Mouser Part No 595-PCA9535DW	Texas Instruments	Interface - I/O Expanders 16-Bit I2C & SMBus L o-Pwr I/O Expander A 595-PCA9535DWR	Datasheet	514In Stock	£4.00 £3.13 £2.65 £2.54 View £2.41 £2.36 £2.34 £2.33	Min.: 1 Mult.: 1	PCA9535	SMD/SMT	SOIC-24	I2C, Serial, SMBus	16 I/O	With Interrupt	2.3 V	5.5 V	400 kHz	- 40 C	+ 85 C		Tube	2 kV
Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand MAX7311AUG+T Analog Devices / Maxim Integrated 1: £9.67 2,325In Stock	Mfr. Part No. MAX7311AUG+T Mouser Part No 700-MAX7311AUGT	Analog Devices / Maxim Integrated	Interface - I/O Expanders 2-Wire-Interfaced 16-Bit I/O Port Expand	Datasheet	2,325In Stock	Cut Tape £9.67 £7.58 £7.05 £6.48 View £6.41 £6.39 £5.45 MouseReel Available	Min.: 1 Mult.: 1	MAX7311	SMD/SMT	TSSOP-24	I2C, Serial, SMBus	16 I/O	With Interrupt	2.5 V	5.5 V	400 kHz	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel
Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with 2-kbit EEPROM and Quasi feature in HVQFN16 package PCA9500BS,118 NXP Semiconductors 1: £2.95 8,000In Stock	Mfr. Part No. PCA9500BS,118 Mouser Part No 771-PCA9500BS-T	NXP Semiconductors	Interface - I/O Expanders 8-bit I2C-bus/SMBus I/O Expander with 2-kbit EEPROM and Quasi feature in HVQFN16 package	Datasheet	8,000In Stock	Cut Tape £2.95 £2.20 £2.01 £1.80 View Reel £1.51 £1.70 £1.67 £1.58 £1.54 £1.51 MouseReel Available	Min.: 1 Mult.: 1 : 6,000	PCA9500	SMD/SMT	HVQFN-16	I2C, Serial, SMBus	8 I/O	Without Interrupt	2.5 V	3.6 V	400 kHz	- 40 C	+ 85 C		Reel, Cut Tape, MouseReel
Interface - I/O Expanders 8bit I/O Expndr PCF8574N Texas Instruments 1: £2.23 10,314In Stock	Mfr. Part No. PCF8574N Mouser Part No 595-PCF8574N	Texas Instruments	Interface - I/O Expanders 8bit I/O Expndr	Datasheet	10,314In Stock	£2.23 £1.68 £1.50 £1.34 View £1.30 £1.26 £1.20 £1.17 £1.15	Min.: 1 Mult.: 1	PCF8574	Through Hole	PDIP-16	I2C, Serial	8 I/O	With Interrupt	2.5 V	6 V	100 kHz	- 40 C	+ 85 C		Tube	1 kV